Identify your devices
NextDNS writes on its homepage that the following method can be used to identify the devices:
DNS-over-HTTPS
Append the name to the given URL (the name should be URL-encoded).
For "Johns Firefox" you would use https://dns.nextdns.io/xxxxx/Johns%20Firefox as the DNS-over-TLS endpoint.
Can the MikroTik router (RB4011) be configured to send the client information along ?
Thank you, greetings Richard